The equipment was taken from the school, on Hookstone Chase and Forrest Lane during the night of 25 and 26 January 2016.
A steel container was forced open and a quantity of construction tools and plant were stolen.
Some of the items are engraved with initials SRC.
Police are conducting enquiries and are requesting the public’s assistance to help determine the full circumstances surrounding the incident.
Anyone with information that could assist the investigation should contact us on 101, and select option 1. Please quote North Yorkshire Police reference number12160014832.
If you wish to remain anonymous, you can pass information to Crimestoppers on 0800 555 111.